{"instruction": "You are an expert in event extraction. Please extract events from the input that conform to the schema definition. Return an empty list for events that do not exist, and return NAN for arguments that do not exist. If an argument has multiple values, please return a list. Respond in the format of a JSON string.", "schema": [{"event_type": "potential therapeutic event", "trigger": true, "arguments": ["Combination.Drug", "Treatment.Duration", "Treatment.Time_elapsed", "Treatment.Freq", "Subject", "Subject.Disorder", "Treatment.Drug", "Effect", "Subject.Gender", "Treatment.Route", "Treatment.Disorder", "Subject.Race", "Treatment", "Subject.Age", "Treatment.Dosage"]}, {"event_type": "adverse event", "trigger": true, "arguments": ["Subject.Age", "Effect", "Treatment.Freq", "Treatment.Dosage", "Treatment.Disorder", "Treatment.Time_elapsed", "Subject.Disorder", "Subject.Gender", "Combination.Drug", "Treatment", "Subject.Population", "Subject.Race", "Subject", "Treatment.Route", "Treatment.Duration", "Treatment.Drug"]}], "input": "Vigabatrin-induced visual field defects are at present the most important safety issue in the use of the drug."}
{"potential therapeutic event": [], "adverse event": [{"trigger": "induced ", "arguments": {"Subject.Age": "NAN", "Effect": "visual field defects", "Treatment.Freq": "NAN", "Treatment.Dosage": "NAN", "Treatment.Disorder": "NAN", "Treatment.Time_elapsed": "NAN", "Subject.Disorder": "NAN", "Subject.Gender": "NAN", "Combination.Drug": "NAN", "Treatment": "Vigabatrin", "Subject.Population": "NAN", "Subject.Race": "NAN", "Subject": "NAN", "Treatment.Route": "NAN", "Treatment.Duration": "NAN", "Treatment.Drug": "Vigabatrin"}}]}